Electric furnace.



.PATEN-TBD MAR-l2, i907. vLE BUY W STEVENS. ELEGTRI FURNACE.

APBLIOATION FILED sBPT.1G,19o5

figg.

1o inake and use the LE ROY WRIGHT STEVENS, OF SYRAOUSE,

ADVANCE FURNACE PATENT orrion.

NEW YORK, ASSIGNOR TO COMPANY OF AMERICA, OF UTICA, NEW YORK.

ELECTRIC FURNACE.

Speeieationof Letters Patent. Application filed September 16, 1 905. Serial No. 278,767.

Patented March 12, 1907.

certain new and useful Improvements int Electric Furnaces; and l do hereby declare that the following is a full, clear, and exact descri )tion thereof, which will enable others skilled in the art to which it appertains to saine, reference being had to the accompanying drawings, and to the -letters of reference marked thereon, which Aform part of this specification.

. The particular object of my present. iini 5 .provement in electric furnaces is to provide a zo ing of the i use of irregular and more or 2 5 electrodes.-

simple and eiiicient means for closing the opening in the wall of a furnace through which the electrode is passed, so as to efioiently exclude theI air andperinit the feedelectrode conveniently and continuously, and wherein provision is made for reserving the mechanism from destruction y the heat of the furnace and permit the less out-of-shape ln the drawings, Figure 1. shows a vertical section of an electric furn ace embodying my .improvements Fig. 2 shows a section. of the electrode, taken on 3o gether with a partial plan view el" the parts while D indicates the movable or adjustz 4e electrode usually connectingI the immediately helow the sectim-l ne.

Referring to the reference. letters and liguies in a more particular description of the device, A indicates the body ol' the furnace, which is provided with the usual internal chamber B for containing the materials to lte operated upon. C indicates one electrode, )rovided in the hott-om of the chamber B, blc positive pole of the generator. f E is a plug or stopper for closing the discharge-opening from the chamber D, while l*1 indicates a means for supplying the material to the chamber to be operated upon. The body A of the furnace 5o ing 2, is a top pl aie is of course of refractory material and is provided in the top with Y an opening 2, through which the electrode D is introduced. On top of the body A, surrounding the open- 3, having a water-chamber and provided with means, as 4 4, for attaching the circulating-pipe. The top plate 3 also includes a smiling-box member 5, which iywatcr may lz-e circulated in the same.

line A B ol'v 'Figi 1, to-

l\ is also provided with a water-chaiiiber and i l means leing indicated by 6 6. The stuffing- 1. box member 5 is `considerably elongated and i in its inner wall adapted to receive the packmeaiis for attaching circulating-pipes, said in tlie upper portion is provided with a recess ine" T.

b rlhe stuffing-box gland is indicated by 8, and the stuliiiig-hox is provided with screw bolts t) for closing the gland down on the packing. rl`he stulling-box receives the slide ing sleeve 10, which is provided 'with a waterchamler within its walls, which chamber is provided with pipe attachments il, whereby The inner wall ofthe sleeve 7 is of considerable larger diameter than that of the electrode D, which passes centrally through the same, and the upper end of the sleeve 10- is preferably given a conical forni, as indicated at i021. Applied to the lower end of the sleeve 10 is a ring] '1, ofrefractorynon-conducting material, the opening through the iingbeing practically the samein di ameter as that of the electrode D. The space 1between thev elect-rode and the inner wall ofthe sleeve lt) is adapted to l:e lilled with sonic granulated refractory material, which is supported in this space. by the ring l2. For securing the sleeve l0 to the electrode D there is provided in tte upper funnel shaped end of t.."c sleeve 10 wedges l5, of nonconduet ing refractory in atcriai wl icl wedges are forced into bindingl position, us letween the sleeve on te outer side and tfe electrode D on te inner side lay screws i6, supported in'inwardlyprolect-ing arms i7 in tile upper end of the sleeve ll). iii-ec of these securing devices are sown in te drawing. (Seelfig. 2f.) Tltc current conductors M are connected to tic electrode D by means olE n clamp ln., and tfic electrode is preferably supported ly the saine wires or conductors. The upper end of tl e electrode D is preferably provided 'with a screw-threaded portion D wl: erehy i succeeding section may he readily attacled, the following section lreing provided withV a to cause it .The whole electrode,

lOS

:Lgjilinet the outside of lie sl'ieve i0 :md ex- Q 1de env air iviliel; in' erivise enter a Il point. ihl e n; l0 will Ie released 5 from. f o eertrode i? from rime to time, ai; oeensioi requires. :nid raied to its upper po- "f .i tfelower if.' i will firmer-:l ifri end 1to1-juni' below e piane o K l. 'The oeeve il) iviil fien be alta i :d to or eonj' n'oeted to electrode D Irv forcing down tIP Wedwnr; melo: lo. "Vle Space wit. in tie ffieeve will Ize lilied iron: time to lime with# pmvdered relraeiorj.' materiall as beiore mentioned, :ind ill some :fama ll quantity olt this maerial escapes: t" rone'ji the opening in tri ringy L and around tile eieetro/le Wren the smeve is being slipped up t? e electrode it will not mutter, as more can. simplied in the funnel-s. aped top. Tice. material used for this nannlated packing' {na}7 be tre saine I es is being: operated upon by eieetrimy l n rn aee. l

it .vili be noted trat ti length olite Sleeve I 10 "l '-/ertieal I sueii :is to allow ('onssideinnne k movement in the smiling-boy; beforeit isI neces ary to disengage it vfrom tite, eleetrode I :md ift its position with reference t reto. l As t..e electrode burns nii or otierivisedisappear the elnmp ny will need. lo be released. from time to time and moved 'lairtirer up onfI the electrode. l ne, lower eleetrode C is mounted on er I eleetriealiv onneetecl with. tlle'coiuluotor-i plate o, wnieii e/Xtendsto tlc exterior of "Le l furnace/*body and has means :for attireV ng; I i" onduetorcables r, Wiiieh preferably f I extei'id to lfze nf 'Miva-side of the generator.

in this oonhtrlnvtion it will be noted. trot the 'pa-cking '7 i; well 'protected rl'rom the inea." oi ine 'l'nrnnee and that in. ease tbe electrode D become@ neated to some. ooneiderobie ciistmee no from its lower end vfitiin the Chainf ber it 'I li have, no detrimentai the naukri .7 and I. the ope/i in rn ae e el'ieet upon Y :amber timori-gh. ivsriei e eieetrede in introduced can lient airwitkout'ine meansy enmiojveffl .becomingy olestroyed and injured lroin two lient of the eleotrode o1 tfiat oi the l'urniieef in th device l electrodes wie. L are more or iess irregular in. I'orm and in \vj.ion. {"e eonmeeting-joint;y be i tween seetione` are more or lese deieetive and l out of true only be snee Ssiuflv used.

it irs evnifn( i); at modiiieatirnfs and (mengen in and "from e eomsiruelion de-I eeribed ma)Y izo :nude ivitout i'iepariin;A Irom i lne. Spirit oi my inveniim.

d'vhnt l elaim as new, and desire to secure, livLellle :z .I')ale,nl1, is-w i i.. 'lfhe eonlbimition with the 'ifur'nnee-imdv l and the eleiirode oi a stullingbox, a movl able Sleeve mounted in the .atullineLbox and I surroinniing the eleetrrnle, :mil providing a spaee between the inw-rivali ol' the tieeve f and the eletnnh?, ,Qrnulur reiiraeiorv marternil in Seid 'paee, mams; lor reti-lining" thel i surrounding? the eleet'rodo, and

1 I set for Ilmvine; an internal ehamber and i'.Surroundin;l an opening' granunr nniterial in position in the'fsleeve, and 1n `:ma` for eonneetinel the sleeve. to the eleetrodo substa-ntiall;v Set i'orth.

The eombii aiion with the iurnarbe-body und the eleetrode of a #idling-box, :i movabie sleeve mounted in the sliuhng-box and providing,r a space initweoi'i the inner wail oiV the Sleeve and the eieetrmle, e anular refraetorv matei rial. in :said space, :rrd meanr ilor retaining the granular material in position in the sleeve, subotartinily an not forth. V

3. The combimition with thel .lurmiee/body and movable elet-trede. of an upright openingA in the body through which pansed into the chamber of theI body approximntelv iitting the electrode at the lower end and enlarged toprovido a space, I(granular refractory motorini in said space yQurromnliner the electrode above the olosely-'litting point7 J Substantially as set forth.

4; The combination in en elee trie furnace having a. furnace-boily-with on intmior cham-- ber and a, movable electrodeJ an upright openinFV through which the electrode is passed into the elnnnberJ Said opening' aipproiimately iitting the eleetrode at the inner endl and enlarged to provide a spare for granular refractory r'initerial above the eloSelv fitting point) and granular retraetorjr maternrl filling said 'ioltlr 5, The combination with the furnaee-body having an interiojz: chamber, and the elee trede of an eleotriofurnace, ol a smiling-box, a movable Sleeve mounten in the smiling-box and surroundingthe eleetrmle, und providing' a, space between the inner Wall of the sleeve, ond the electrode, and having` n'leans for eireulating water within the body of the sleeve, zgranular me terinl in szn'd space means for rotnining the granular material in position Within the sleeve. and means for eonneeting the. :sle'ive Ijo .the elef'trode, snbstantiallv an (i. The eon'ibination with the fornito-dimly haring an internal einnnber and the eleeprode oi :in electric furnace, ol' a #smiling-box, a, movable nl 'e mounted in the smiling-box and surrounding; the electrode :md providing ay spazio between the inner Wall ol' the sleeve and. the eieetrode for granular rei'l'aetoijv mn.- terifii, n wall oi non--eondnoting rel'rin'torv material elosingg the ioiver end of Said space, and granular rel'rmfti'rrv materizl eoi'itained in sind space, siilistan'tialiv as set forth.

T. 'i`he eon'ibination with the i'nriniee-lnid v the eieetrode oi' .in electricy l'nrnaee, olI L stullinfr-I)oxl through lhe body able Aaleeve mounted space, substantially as into l'he elnnnber, a mov in the Stullingbox and Snrrrmnding' the elecrode, and mean l'or eonneeingf the lsleeve to f the eleetrode, snbstamjiallv as set forth.

. The combination with theri'inl'inee-boiI v the electrode i- IOL having an interior chamber and the electrode 2 ing water, of a sleeve surrounding the elec-v of an electric furnace, of a stuffing-box, a trode and working in said stuffing-box, sub 4movable sleeve mounted in the stuffing-box l stantially asset fort and surrounding the electrode, and provided ln witness whereof I have ailixed my s ig- I 5 with an interior chamber, .and means for cnnature, in presence of two witnesses, this 18th culatino water through said chamber, subday of August, 1905 stantiall f as set forth.'

9. The combination with the furnace and 'i LE ROY WRIGHT STEVENS electrode of an electric furnace of a stufling- Witnesses: box having a chamber for packing surround- S. I. DEVINE, ing ,the .electrode and a chamber for cxrculai'f g E. S. HEssE. 

